Is there a way to change recording speed?

Hi all,
I was wondering if there is a way to temporally change recording speed in Ardour (I’m using 2.4.1 right now).

For example, I have a session at 48KHz with 4 tracks in it and I want to record a fifth track at, let’s say, 80% the speed, so that when I playback I hear that new track in a higher pitch.
I noticed that you can record with the shuttle speed control at 80%, but the audio is actually recorded at normal speed (100%) and you don’t achieve the effect I’m looking for.

I know it’s a bit strange and that I could get to the same results using another methods (manually changing the sampling rate, converting audio, etc) but I’m experimenting a bit with the music I make and it would be nice to rapidly change the speed from de shuttle speed control, so I’m wondering if there is some way to make Jack, or Ardour adapt the recording sample rate to this.
Thanks in advance.

Pablo .

no, ardour doesn’t do this. however, you can:

a) use a realtime pitch-shifting plugin on that track
b) pitch-shift (or time-stretch) a single region

both of which will get you what you want in somewhat different ways.

Thanks for your quick reply!

I’ll go for option (b)